9‐Benzoyl‐3,3,6,6‐tetramethyl‐1,2,3,4,5,6,7,8‐octahydroxanthene‐1,8‐dione: molecular conformation and supramolecular aggregation in xanthenediones

In the title compound, C₂₄H₂₆O₄, (I), the central ring of the fused tricyclic ring system adopts a shallow boat conformation, while the two outer rings adopt envelope conformations. The molecules are linked into C(9) chains by a single C—H...O hydrogen bond. The significance of this study lies in its comparison of the conformation and supramolecular aggregation of (I) with those of related compounds in the published literature.